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Technical Support / Aqua-hot burner not starting after Racor Filter change.
« Last post by Mike Sulley on February 06, 2025, 02:27:46 AM »As some of you may remember, my Aqua-hot quit working on our last trip of the season. We found the Aqua-hot system very low of boiler fluid. Eventually found connections leaking on forward most heat exchanger connections. Tightened. Refilled system with 6- 8 gallons of boiler fluid.
Since I had not preformed an annual maintenance, I replaced the Racor filter and the burner nozzle. The Racor filter would not gravity refill, so I attempted to fill the filter by installing a primer bulb on the outlet of the filter and was able to fill the visual filter bowl and out flow line. Removed the primer bulb and reconnected line to the diesel manifold. Attempted to restart the burner but no luck.
I loosened to the Banjo bolts on the burner fill and return lines. No diesel! Can someone enlighten me on the correct filter priming method? Without a dedicated pump from the main diesel tank, I assume one must rely on initiating a siphon thru the Racor and burner lines. Once the burner lines are full, can I apply 12 volts to the burner pump to establish circulation back to the system?
Going forward, am I better off replacing the Racor with a spin-on filter element? The guys in the videos never seem to have this problem.
I thank you in advance for your responses.
Respectfully,
Mike Sulley
2001 Beaver Marquis Amethyst
Since I had not preformed an annual maintenance, I replaced the Racor filter and the burner nozzle. The Racor filter would not gravity refill, so I attempted to fill the filter by installing a primer bulb on the outlet of the filter and was able to fill the visual filter bowl and out flow line. Removed the primer bulb and reconnected line to the diesel manifold. Attempted to restart the burner but no luck.
I loosened to the Banjo bolts on the burner fill and return lines. No diesel! Can someone enlighten me on the correct filter priming method? Without a dedicated pump from the main diesel tank, I assume one must rely on initiating a siphon thru the Racor and burner lines. Once the burner lines are full, can I apply 12 volts to the burner pump to establish circulation back to the system?
Going forward, am I better off replacing the Racor with a spin-on filter element? The guys in the videos never seem to have this problem.
I thank you in advance for your responses.
Respectfully,
Mike Sulley
2001 Beaver Marquis Amethyst